Means for correcting improper registry of party-colored warp-threads



Patented Dec. I7, |90l.

HAnwlcK. UPER REGISTRY 0F PABTjY-COLUBED WARP THREADS..

(Lpplmtion Mld Apr. 25, 1900.1

Lllo Model.)

UNITED STATESv PATENT rrics.

HARRYIIARDWICK, OF PHILADELPHIA, PENNSYLVANIA.

MEANS FOR CORRECTING IMPROPER REGISTRY 0F PARTY-COLORED WARP-THRlEADS.

SPECIFICATION forming part of Letters Patent N o. 689,184, datedDecember 17, 1901.

Application led April 25, 190D. Serial No. 14,285. (No model.)

To all whom/t may concern:

Be it known that I, HARRY HARDWICK, a citizen of the United States,residing in Philadelphia, Pennsylvania, have invented certain Means forCorrecting Improper Registry of Party-Colored Warp-Threads in TextileMachinery, of which the following is a specification.

My invention relates to textile machinery, such as warping-machines forwinding or looms for'weaving fabrics in which are employed party-coloredwarp-threads having the colors so disposed upon the different threadsthat when the latter are woven into a fabric a predetermined patternwill be produced, the ordinary tapestry carpet being a common example ofthe fabric woven in this way.

The object of my invention is to provide for the control of thewarp-threads during the winding or weaving operation, so that the colorsof the diierent threads may be kept in closer registry than usual,Lwhereby the iigures in the pattern of the fabric prod uced will havesharper or more well defined outlines than it is possible to obtain withthe present methods of winding and weaving. This object I attain in themanner hereinafter set forth, reference being had to the accompanyingdrawings, in which- Figure 1 is a diagrammatic view, in side elevation,illustrating suiiicient of a loom equipped in accordance with myinvention to impart a proper understanding of the latter. Fig. 2 is anenlarged View of part of an indexboard constituting one element of themechanism employed. Fig. 3 is a. front'view of part of the loom-reed,and Figs. 4 to 11 are views illustrating modifications of certainfeatures ofthe invention. p

In weaving in the ordinary way fabrics with party-colored warp-threadsit is practically impossible to produce a pattern having figures withsharp or well-defined outlines, this defect being due, in part to theimpossibility of taking up precisely the same amount of each warp-threadfor each turn of the beam in winding said warp-threads upon the latterand in part to a'lack of uniformity in the stretch of thewarp-threadswhile beaming or in the draft upon the threads during the operation ofweaving. I overcome the objection in great measure by using inconnection with each warp-thread, preferably both inV beaming andweaving, means for graduating the tension upon said warp-thread, thepreferable plan being to deliect each warpthread and to provide saidthread with means whereby the extent of such deflect-ion may be varied.By this means I am enabled to take up the slack in any thread which mayexist at the beginning of the winding or weaving operation and togradually give out that slack as the winding or weaving progresses, andI am also enabled t0 Vary the tension upon each warpthread independentlyduring the winding or weaving and by thus tightening or slackening thethread can so govern the position of the party-colored portonsof thesame as to correct improper registry of colors' in adjoining warp-threads. Each warp-thread may be composed of two or more strands operatedas a unit;

I have illustrated my invention in connection with a loom, which, so faras regards the appliances for weaving, may be constructed in anyordinary manner. In lthe drawings, however, I have only shown theloom-frame, the swinging lay 1, with its reed 2, the beam 3 for theparty colored face or pattern forming warp-threads, the beam 4 for theground or backing warpthreads, the fac-e warp-heddles 5, the groundwarp-heddles 6, the take-up rolls 40, and the cloth-wind ing roll 41. Atsome point between the warp-beam 3 and the heddles I pass each partycolored patterning warp thread around a guide-bar 7, preferably circularin cross-section and composed wholly or in part of glass or othermaterial around which the thread will pass freely, thence through au eyein a vertically-guided rod 8, and vthence to and around anotherguide-bar 9, similar to the bar 7. The upper end of the rod 8 isatt-ached to a cord, chain, wire, or other ilexible connection 10,(hereinafter for` convenience termed simply a wire,) which passesthrough one of the spaces in a reed or grating 11 and thence around aguide-bar 12, similar to the bars 7 and 9, the wire being then carriedforwardly to another similar IOO guide-bar 13, after passing aroundwhich it` passes through one of the spaces of a reed or grating 14 andthence to a pin 15, which can be adapted to any one of a number ofopenings in anindeX-board 16, secured to the frame of the loom, so as tobe within convenientsightand reach of the loom attendant.

As shown in Fig. 1, the normal position of the guide-eye in the rod 8 issome distance above the guide-bars 7 and 9, and the normal position ofthe pin 15, connected to said rod, is about the center of the verticalrow of openings formed in the index-board 16 for the reception of saidpin. Ilence by moving the pin to a lower opening an upward pull will beexerted upon the detiected por# tion of the warp-thread, and by movingthe pin to a higher opening said deflected portion will be slackened.equivalent means ot' connecting the rods 8 and pins l may of course besubstituted for the pulleys and wires. Any slack which may exist ineither warp-thread at the beginning of the weaving operation can betaken up, and during the weaving the tension upon one oftheparty-colored warp-threads can be iucreased or diminished, and saidthread can be woven tightly or loosely in order to bring any particularportion otsaid thread into proper registry with thc portion of anadjoining thread which is intended to register' therewith. llence theattendant by closely observing the fabric during the operation ofweaving and by properly manipulating the pins can maintain the colorsot` the adjoining warpt hreads in substantially correct registry. It',for instance, a particular portion of a warp-thread is in advance of theportion of an adjoining thread withv which it should register, saidfirst thread may be subjected to increased tension, and thus woven lnoretightly than the other, until the greater takeup of the latter, due toits slacker weave, brings the two threads into register again, a reverseaction attending reverse conditions. In beaming the warp each threadbeing under separate control can be likewise tightened or slackened tocompensate for irregularityin the winding. Hence the warp as deliveredfrom the beam will approximate correct registry more closely than usual.

Where the warp is tine, l may, in order to avoid crowding, duplicate theguide-bar 9, as shown at 9, and the reed or grating l1, as shown at l1,disposing the rods 8 of certain of the warp-threadssay the tirst, third,fifth, seventh, and so on-between the bars 7 and 9 and the rods 8 of thealternate threads-say the second, fourth, sixth, eighth, and soonbetween the bars 9 and 9a, this duplication of the parts beingrepresented in Fig. 1, or where the amount of slack in a particularwarpthread is excessive I may use inv connection therewith two rods 8,so as to deflect it twice. I may also deiiect the warp thread downwardlyinstead of upwardly from its normal line, as shown in Fig. 4; but inthis case the tension upon the warp-thread will be dependent upon theweight of the rod 8. Hence the plan shown in Fig. l is to be preferred.Various means may also be used to adjust and Levers and cords or otherretain the front end of the wire l0. Thus, as shown in Fig. 5, a ring 17at the end of the wire can be adapted to any one of a row of pins 1S onthe index-board, or, as shown in Fig. 6, a ring or loop at the end ofthe wire can be adap'ied lo any one of the teeth of a ratchet-bar 19 onsaid board, ora reverse construction may he adopted-that is to say, asingle pin 200m the index-board may be adapted to any one of a numberot'V openings in a bar 21 attached to the wire, as shown in Fig. 7, orapair of pins 22 may serve as a catch or retainer for any one of a seriesof knots or protuberanees 22 en .the wire,u as shown in Fig. 8, or inother cases I may use a rotatable pin 23, similar to the tuning-pin of amusical instrument, the forward end of the Wire being wrapped aroundsaid Din, so that the turning of the pin in one direction will tightenthe wire, while the turning of the pin in the other direction willslacken it, such construction being shown in Fig. 9. My invention mayalso be carried out by imparting tension to the warp-threads withoutdetlecting the same. Thus, as shown in Fig. 10, each warpthread may becaused to pass between a pair of rollers 24 and 25, the latter beingcarried by a lever 26, to which is connected the Wire 10, so that saidroller 25 may be caused to press upon the roller 2i with any desireddegree of force, and thus cause the Warp-thread which passes between therollers to be woven either tight or slack, as desired, either or both ofthe rollers being provided with an elastic orsemi-elasticcovering.Thisembodimentot' my invention, however, necessitates the use of a pairof rollers foreach warp-thread.

In order to enable the weaver to readily correlate each of thewarp-adjusting or tension-regulating devices and its correspondingwarp-thread rr, I prefer to provide each of the spaces of the reed witha number or other indicating-mark, as shown in Fig. 3, and tocorrespondingly number each of the adjusting devices. For instance, inFig. 2 I have shown each row of openings in the index-board as numberedto accord with the number of the corresponding space of the reed.

If desired, the rods 8 may be discarded and the warp-threads passedthrough eyes connected directly to the Wires 10, as shown, for instance,at 27 in Fig. l1; but the use of the guided rods is preferred, for thereason that they serve to prevent entanglement of the warp threads ortheir adjusting devices. The eyes may be provided withantifrictionrollers to ease the movement of the threads therethrough,one ofsuch rollers being shown at 28 in Fig. 11.

It will be advisable in many cases to provide for the advance orretraction to a limited extent of the entire party-colored warp-as, forinstance, when it is desired to bring a particular portion of eachwarp-thread directly on top of the inserted pile-wire at the beginningor other part ofthe Weaving operation. This may be accomplished indifferent Ways, two

IOO

diierent means for its accomplishment being shown in Fig. 1, onreference to which it will be observed that the guide-bar 7 is carriedby a rock-shaft 3l through the medium of any desired number of arms 30,said shaft having a worm-wheel 32, meshing with a Worm 33 on a shaft 34at the side of the loom, so that by turning this shaft in one directionor the other the guide-bar 7 may either be raised to slacken the warpand permit it to be drawn forward or maybe lowered, so as to tighten theiwarp and draw it rearward, or the same result may be accomplished byvertical movement of the index-board 16, so as to'simultaneouslylengthen or shox-teni to the same extent the defiected portions of theWarp w, the means shown in the drawings for accomplishing this movementcomprising a vertical screw-shaft 35, vertically conned to suitablebearings on the loom-frame and engaging with a nut 36 on the back of theindex-board.

Having thus described my invention, I claim and desire to secure byLetters Patent- 1. As a means of correctingimproper registry ofparty-colored warp-threads in textile machinery, independent andseparately-controllable tension devices for each of the threads to begoverned, substantially as specified.

2. The combination in means for correcting improper registry ot'party-colored warpthreads in text-ile machinery, of guides for deectingsaid warp-threads from a straight course, and provision for varying theextent of deflection of each thread, substantially as specified.

3. The combination in means for correcting improper registry ofparty-colored warpthreads in textile machinery, of guides for deilectingsaid threads from a straight course, provision for varying the extent ofdeflection of each thread, and other guides for causing the defiectingdevices to maintain their proper lateral relation to each other,substantially' as specified.

4. The combination in means for correcting improper registry ofparty-colored Warpthreads in textile machinery, of a pair of guidesaround which the warp-threads pass, a series of rods movable betweensaid guides in a plane at right angles or thereabout to the line of thewarp, and each having an eye for the passage of a warp-thread, and meansfor adjusting each of said rods to any desired extent independently ofthe others, substantially as specified. l

5. The combination in means for correcting improper registry ofparty-colored Warpthreads in textile machinery, of independent tensiondevices, one for each of the threads, and an index-board having meansfor adjusting said tension devices, substantially as speciied.

6. The combination in means for correcting improper 'registry ofparty-colored warpthreads in textile machinery, of guides for deiiectingeach of said threads from a straight course, one of the guiding elementsbeing movable to vary the extent of defiection, an index-board havingadjusting devices thereon, and connections between each of said adjusting devices and a corresponding movable guide, substantially asspecified.

7. The combination in means for correcting improper registry ofparty-colored warpthreads in textile machinery, of guides for deectingeach of said threads from a Straight course, and means for moving one ofthe guides to vary the extent of deiection, said movable guide being sodisposed that a pull upon it is resisted bythe tension of the Warp,substantially as speciied.

8f The combination in means for correcting-improper registry ofparty-colored warpthreads in textile machinery, of devices for taking upand letting out slack in each Warpthread independently of the others,andmeans for slackening or tightening the entire body of Warpthreadssimultaneously, substantially as specified.

9. The combination in means for correcting improper registry ofparty-colored warpthreads in textile machinery, of independent tensiondevices one for each thread, a guide grating or reed, an index-boardhaving means for adjusting said tension devices, and indicating-marksfor the reed-spaces and adjusting devices, whereby their correlation isfacilitated, substantially as specified.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

HARRY HARDWICK.

VWitnesses:

F. E. BEoH'roLD, J os. H. KLEIN.

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